Answer:

<h3>First answer is correct</h3>
Step-by-step explanation:

Answer:
2 one and the 4 one
Step-by-step explanation:
Answer:
The answer to your question is: -9 - 6i
Step-by-step explanation:
Process

= - 9 - (6i)
= -9 - 6i
To determine how much of the wall is blue we first need to find its area. The wall is a rectangle, then its area is the product of its height and length:

Hence, the area of the wall is 140 square ft. To determine how much of the wall is already painted we multiply this by 1/2, then:

Therefore, 70 square ft are blue.